Resistance Box Plug Type (Constantan / Manganin Coil) Manufacturer,Supplier and Exporter in India
Product Code : EL-E-10993
A Plug Type Resistance Box uses high-resistivity,
low-temperature-coefficient alloys like Constantan (Eureka) or Manganin for
its internal coils, wound on spools within a teak wood box with brass blocks
and plugs, allowing precise resistance selection by removing plugs to add their
values, crucial for accurate lab experiments needing stable resistance
Engineered for high-stability ohmic calibration, this Plug Type Resistance Box utilizes non-inductive Constantan or Manganin coils to facilitate precision electrical measurements. Adhering to strict institutional accuracy standards (up to ±0.02%), it serves as a primary standard for University and Vocational TVET curricula in DC bridge and potentiometer experiments, ensuring thermal stability and minimal contact resistance across all decade steps.
Technical Specifications
|
Tender Specification |
OEM Technical Detail |
|
Material Grade (Conductor) |
Double-covered Eureka Constantan or Manganin Wire |
|
Winding Architecture |
Non-inductive, wound on heat-stabilized Bakelite spools |
|
Contact Interface |
10mm to 12mm (approx. 1/2 inch) thick rectangular Brass
blocks |
|
Accuracy (Constantan) |
±0.05% to ±0.1% |
|
Accuracy (Manganin) |
±0.02% to ±0.05% |
|
Enclosure |
Ruggedized, seasoned hardwood box with high-insulation
properties |
|
Interface Mechanism |
Precision-ground taper plugs for zero-gap conductivity |
Key Pedagogical Outcomes
- Heavy-gauge
(12mm) Brass Blocks: Allows students to analyze the impact of
minimal contact resistance on circuit precision, supporting Advanced
Electromagnetism modules.
- Non-inductive
Double-Covered Winding: Enables learners to evaluate resistance
values in high-frequency applications without electromagnetic
interference, verifying non-inductive coil theory.
- Precision-Ground
Taper Plugs: Facilitates the application of mechanical
interface integrity to electrical conductivity, ensuring repeatable
results in null-point detection.
- High-Stability Manganin Coils: Supports the synthesis of quantitative data regarding temperature coefficients, demonstrating material stability under varying thermal loads.
International Logistics & Compliance
Science Lab Export ensures that all precision
resistance standards are prepared for immediate global deployment. Packaging
utilizes export-grade seaworthy crating (ISPM-15 compliant) with internal
anti-static and moisture-barrier lining to preserve the integrity of the seasoned
hardwood enclosure. Comprehensive documentation is included with every
consignment, featuring the Manufacturer’s Authorization Form (MAF), IQ/OQ/PQ
Certification, and technical User Manuals in English. The apparatus is a
tropicalized design, tested for dielectric stability and calibration retention
in operational environments reaching 45°C and 90% non-condensing humidity.
